I made an edit on this answer summarizing a large amount of "stuff" that was extra, unnecessary, hardly readable, and sometimes inappropriate. I left the answer with the very same important meaning, removing wrong, non-useful things like:

I know people that went to jail because they download child pornography but never abused a children

(Wrong because downloading child porn is a form of abuse.)

and

Not calling your son a sexual offender, he isn't one just like me. Why find a therapist that works with sexual offender? Because they will not judge your son like some other therapists does because they don't have experience with this type of subject.

(Wrong because OP is not a therapist and can't make that suggestion. This is a matter of medical/professional advice)

and even

Suicide all the time, I never tried to kill myself but I always though about that the world would be better if I killed myself. Or why god choose me to be like this and not someone else. Some suicide thoughts that I had like buying a gun and shooting my head, freeze to death, take some medicine like a lot till get a overdose, I never used drugs and I don't drink but I thought of using drugs till I die or don't feel in my normal state of mind anymore, drown myself.

(Inappropriate since saying things like "shooting my head" are unnecessarily gruesome when "Thoughts of suicide" expresses the situation perfectly)

But the OP changed it all back, with a comment that I changed all the "stuff he said". Well, I did change a lot of it, and in a necessary way..

So, when an OP denies necessary edits to his answer, does the community roll back the edits/lock the answer somehow, or does the OP own the answer, and in this case the answer should just be removed?

Is my edit valid, or is it questionable?

How is this handled here?